Knife-sharpener.



P. J. HAAS. KNIFE SHARPENER. APPLIOATION FILED JAN. 31, 1912.

Patented Mar. 11, 1913.

Cil

PHILIP J HAAS, F YORK, NEBRASKA.

KNIFE-SHARPENER.

Specification of Letters Patent.

Patented Mar. 11.1, 1%13.

Application filed January 31, 1912. Serial No. 674,560.

T 0 all whom 2'2 may concern Be it known that I, PHILIP J. Haas, citizenof the United States, residing at York, in the county of York and Stateof Nebraska, have invented certain new and useful Improvements inKnife-Sharpeners, of which the following is a specification.

The primary object of my invention is the provision of a very simple andeffective knife sharpening device capable of use in sharpening all kindsof blades, and so constructed as to be very easily operated.

A further object is to provide in this connection a sharpening deviceincluding a handle having oppositely disposed arms resiliently forcedtoward each other and carrying opposed abrading members, the resilienceof the arms yieldingly forcing these members toward each other andagainst a knife blade drawn between said abrading members. i

A further object in this connection is to provide means for spreadingthe arms of the handle apart to permit the abrading mem-- bers to bereadily applied or detached, and when in position between the arms ofthe handle will permit said arms to contract, but which when turned downinto operative position will spread the arms.

My invention is illustrated in the accompanying drawings wherein:

Figure 1 is a perspective View of my 1111- proved implement showing itiii-position for sharpening a knife, the knife being shown in dottedlines. Fig. 2 is a face View of the implement showing in dotted linesthe position taken by the arms when the spreader is turned atrightangles to the handle. Fig. 8 is an enlarged detail sectional Viewon the line 3-3 of Fig. 2. 4 is a detail perspect-ive view of a modifiedform of abrading member.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the accompanying drawingsby the same reference characters.

Referring to these drawings, 2 designates the handle generally, cemposedof spring steel or like material bent at its middle so as to provide theoppositely disposed bowed arms 3 and i, these arms being practicallyalike in all essential respects. The extremity of the arm 4 isangular-1y twisted as at i so that said extremity is inclined at anangle to the plane of the body of the arm 4. The portion of the arm 5%opposite the extremity of the arm 4 is also a-ngularly twisted as at 3,the inclination of said portion, however, being opposite to theinclination of the extremity of the arm 4 so that these deflectedportions of the arms 3 and 4 are inclined toward each other.

The arm 3 in the embodiment of my invention illustrated in the drawingsis extended so as to form a can opener, the arm 3 being extended as at 5to form a bearing member having an angular bend 6 at its terminal endadapted to rest upon the top of a can, while attached to this part 5 isthe angular blade 7 of a usual form and having a cutting edge 8. Thisform of can opening tool is so well known, that its operation need notbe particularly described.

Mounted upon the twisted extremity of the arm at is an abrading memberdesignated 9, while mounted upon the corresponding portion of the arm 3opposite the terminal end of the arm 4 is an abrading member 10. It willbe seen that these abrading members are held againstthe faces of thedeflected portions of the arms, and that as a consequence the abradingmembers incline toward each other. Considering the blade 5 as being atthe top of the tool, it will-be seen that the abrading members inclinelaterally toward each other. Preferably, and in the form shown in Fig.2, these abrading members consist of disks of carborundum or likeabrading material such as emery rotatably mounted upon the arms 3 and 4.In the preferable form of my invention, each abrading disk iscountersunk as at 11, and through the disk passes a bolt 12, this boltbeing formed with a head 13, a relatively large body portion 14:slightly less in diameter than the head and forming a bearing for thedisk, and a reduced screw threaded shank 15 with which a nut engz ges.The head 13 holds the disk in place against the face of the deflectedportion of the corresponding arm, while the enlarged body rotatablysupports the disk. Each disk has a beveled margin so that the face ofthe disk is approximately convex.

1 do not wish to be limited to the use of rotatable disks upon the armsas it may use abrading members which are not rotatable and which do nothave the shape of a circular disk but the shape of a rectangle oroblong, as illustrated in Fig. 1.. These members which are designated 16have beveled margins. and each member may be so placed downward.

The resilience ofthe bowed spring arms 3 and 4 tends to force theextremities of old the disks 9 and 10 with their upper faces in contactwith each other so that. the disks will be resiliently pressed against aknife blade passed between them.

In order to assist the resilience of the bowed spring arms 3 and also toprovide means for opening out or spreading apartthe arms 3 and 4 so thatthe disks 9 audit), or the members 16 as the case may be, may beremovedwhen worn and replaced, I have provided a, member designated 17comprising a strip of resilient metal preferably spring steel, bent inapproximate Ushape and pivotally mounted at its ends by means of rivets18 between the arms 3 and 4 adjacent to the abrading-disks. It will beseen that at the point of pivotal attachment of the member 17 with thearms 3 and4, the arms converge toward each other. When the U-shapedmember 17 is so turned as to be disposed in the same plane as thehandle,

that is, between the arms 3 and 4 in the position shown in Fig. 2, theresilience of the arms 3 and 4 and of the arms of member 17 will holdthe disks 9 and 10 in approximate contact'with each other. l/Vhen,however, the member 17 is turned to a osition at right angles to thehandle, it will act to force the members 3 and 4 apart, permitting ascrew driver to be readilyengaged with the notched head 13 and thuspermitting the nuts 15' to be readily removed and the abrading disksalso removed and replaced.

The tl-shaped member 17 is formed of spring steel in order that it mayadd resilience to the arms 3 and 4 and when rotated to a position whollybetween the arms will assist the arms 3 and 4: in urging the'abradingmembers into close engagement with a knife passed between them. Theform of the il -shaped member is such, however, and its arrangementrelative to the arms 3 and 4 is such that when the U-shaped member 17 isrotated to a position at right angles to.

the handle formed by the arms 3 and 4, it will act to separate the arms.

While the member 17 might be provided with any sort of a shank or handlewhereby it could be readily operated, 1 preferably form this handle asan implement, and in the illustration this implement has the form of acorkscrew 19. it will be seen that when the member 17 is in the positionillus' trated in Fig. 1, this corkscrew is entirely housed between thearms 3 and i, but that when the member is turned at right angles to thehandle, the corkscrew is in operative position. Furthermore, as beforestated, when the member is turned at right angles the arms toward eachother and resiliently intense to the handle, it spreads the arms 3 and 4apart, thus, increasing the width of the handle and providing a betterbearing for the hand of the operator.

While I have shown the handle of my improved implement as being formedof one piece of spring metal bent at its middle to provide the arms 3and 4, it should be understood that I do not wish to limit myself tothis as it might be formed of two pieces of spring metal joined in anysuitable manner to provide said arms. Neither do It wish to limit myselfto providing a can opening tool mounted upon one of said arms as the arm3 might terminate opposite to the termination of the arm 4, in whichcase the implement would be only adapted to sharpening knives, or tosuch other uses might, be provided by the tool carried within the handleand forming the spreader.

To use the sharpening devices, the knife to be sharpened is held in onehand with the edge of the blade up. The sharpener is held in the otherhand with the point of the can opener up and top of same-toward theknife blade. The knife blade is placed through the handle of thesharpener just under and between the abrading members so as to allow theabrading members to comeup close to the handle of the knife and theknife is drawn rearward across the abrading members toward the point ofthe knife. This is repeated as often as required. Another way to usethis sharpener is to place the guide of the can opener on the edge of atable allowing the point of the opener to pass over the edge. Thesharpener is then held firmly in this position and the knife blade isdrawn between the stones as before described.

My improved implement forms a particularly ell'ective combination devicefor sharpening all kinds of knife blades, opening cans and pullingcorks. It is especially adapted to household uses, and to the uses ofcampers, hunters, etc. on account of its convenient size and shape forcarrying.

What I claim is:

l. A knife sharpener including a handle formed of a strip of resilientmetal folded to provide oppositely disposed resilient arms, resilientlyurged toward each other, said arms being formed at their'extremitieswith oppositely disposed portions angularly deflected and having anangular relation to each other, and abrading members carried upon saiddeflected portions and inclined toward each other, said abrading membersbeing each formed upon its inner face with a beveled margin, the beveledmargins of the abrading members on one side of the center of saidmembers being approximately parallel to each other.

2. A knife sharpener including a handle having oppositely disposedv armsresiliently urged toward each'other, opposed abrading members carried onsaid arms, and a spreader disposed between the arms and shiftable tospread the arms away from each other.

3. A knife sharpener including a handle having oppositely disposed armsresiliently urged toward each other, opposed abrading' members carriedon said arms, and a U- shaped spreader pivoted between the arms androtatable into a position to spread the arms apart. I I I 4. A knifesharpener including a handle composed of oppositely disposed bowed armsconnected to each other at one end and resiliently urged toward eachother at the other end, opposed abrading members carried on said arms,and means mounted between the arms shiftable to separate the arms.

5. A knife sharpener including a handle formed with oppositely disposed,approir imately parallel bowed resilient arms, the resilience of themetal urging said arms inward and toward each other, and oppositelydisposed abrading members carried upon the extremities of said arms andeach rotatably adjustable upon its arm, said members being angularlyinclined with relation to each other and said members having beveledmargins, the beveled margins of the members on one side of the center ofsaid members extending approximately parallel to 1 each other. i

6. A knife sharpener including a handle having oppositely disposed armsresiliently urged towardeach other,-opposed abrading members carried onsaid arms, and a U- shaped member of spring metal disposed between thearms and pivoted at its termini to said arms. 7

In testimony whereof,'I aflix my signature in presence of two witnesses.

PHILIP J. HAAS. 1 5.

Witnesses:

M. M. WILDMAN, I. M. HAAS.

